The Platypus Submarine Can Travel Both On Water and Under Water

A design conceived by Francois-Alexandre Bertrand and naval architect Philippe Roulin, the Platypus Submarine is an innovative boat-submarine hybrid that can travel both above water and under water.

The Platypus Submarine has a central hull, where riders are meant to sit, flanked by two pontoons, which are joined by four horizontal arms. When these arms are horizontal, the craft acts like a jet ski and the riders can travel on the water's surface. The same four horizontal arms can also rotate downward; when this happens, the center section dips into the water and takes the riders under water.